•
•
-
-
-
-
-
N O T I C E
Circuit breakers are not allowed in installations where C-UL is required. Only UL recommended fuses are allowed.
5.6 Auxiliary Supply Requirements
Supply the Power Supply Module (PSM 510) with a power supply unit with an output range of 24–48 V DC ±10%. The output ripple
of the power supply unit must be <250 mV
pp
. Only use supply units that conform to the PELV specification. Refer to the
VLT® Servo
Drive System ISD 510, DSD 510, MSD 510 (VLT® Flexmotion
™
) Design Guide
for power rating shell diagrams.
N O T I C E
Only use supply units that conform to the PELV specification.
Use a supply that is CE-marked according to the standards EN 61000-6-2 and EN 61000-6-4 or similar for industrial use.
The secondary circuit must be supplied from an external isolated source.
The power supply unit must be dedicated to the ISD 510/DSD 510 servo system, meaning that the supply is used exclusively for
powering the PSM 510. The maximum cable length between the supply unit and the PSM 510 is 3 m.
5.6.1 Fuses
UL listed fuses are recommended to protect the wiring on 24–48 V DC.
Table 21: Fuses
CE Compliance (IEC 60364)
UL Compliance (NEC 2014)
Maximum fuse type
Maximum fuse type
50 A
(1)
63 A
(2)
1
If the maximum current is lower, a fuse with lower current rating can be used. Rating of IEC fuses: according to 100% of maximum current. Use a
time delay fuse rated according to the DC voltage used.
2
If the maximum current is lower, a fuse with lower current rating can be used. Rating of UL fuses: according to 125% of maximum current. Use a
time delay fuse rated according to the DC voltage used.
5.7 Safety Supply Requirements
Supply the STO line with a 24 V DC supply with the following properties:
Output range: 24 V DC ±10%
Maximum current: 1 A
Use a 24 V supply unit that is CE marked for industrial use. Ensure that the supply fulfills the PELV specification and is only used for
the system safety input.
A common supply for auxiliary and safety supply can be used, provided the only connection point of the 2 circuits is near to the
supply. This is intended to avoid interference due to a common voltage drop. The maximum cable length between the 24 V supply
unit and the servo system is 3 m.
The safety supply can be looped from PSM 510 to the other system modules except for ACM 510. The cable for this is not provided.
For further information, see
.
N O T I C E
Ensure reinforced isolation between safety signals and other signals, supplies (mains supply), and exposed conductive parts.
AQ262449648484en-000101 / 175R1135 | 65
Danfoss A/S © 2020.08
Electrical Installation
VLT® Servo Drive System ISD 510/DSD 510
Operating Guide
